Abstract
The herd seroprevalence of bovine respiratory syncytial virus (BRSV) was studied in 59 dairy cattle herds using serology on random selected animals stratified by two age classes (heifers, cows). Risk factors for primary infections in heifers were investigated using a questionnaire on management conditions and data on bovine viral diarrhoea (BVD) status. At least one seropositive cow was present in all the herds. In 25% of the herds all individual were seropositive and 22% of herds had all heifers seronegative. Analysis of the influence of risk factors retained summer pasture and BVD status. In particular, absence of summer pasture and the BVD positive status of heifers were associated with an increased risk of BRSV infection in heifers group.
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This study was partially supported by Chambers of Commerce of Lecco and Como.
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Stefano Salvetti Private practitioner, Brescia, Italia Michela Frigerio Private practitioner, Lecco, Italia
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Luzzago, C., Bronzo, V., Salvetti, S. et al. Bovine respiratory syncytial virus seroprevalence and risk factors in endemic dairy cattle herds. Vet Res Commun 34, 19–24 (2010). https://doi.org/10.1007/s11259-009-9327-z
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DOI: https://doi.org/10.1007/s11259-009-9327-z